it offers semantic security, data authentication, data integrity and freshness 它能提供網絡數據內容的語義加密、數據源認證、數據完整性和數據新鮮。
most research efforts are poured into the areas related to copyright protection and data authentication 大多數的研究主要是針對版權保護和數據認證這兩個方面進行。
for example, they are often used in conjunction with encryption in order to achieve both data privacy and data authentication 例如,它們經常與加密聯合使用,以便保持資料私有性和資料認證。
and since then, it has attracted attention more and more . now, digital watermarking has many other applications such as data authentication, indexing data, data hiding, and so on 目前,除了版權保護應用之外,數字水印技術還具有許多其它方面的應用,例如數據認證、索引數據、數據隱藏等。
it's also suggested that the research on multimedia data authentication should aim at concrete situation . it's undoubtedly that designing the watermark scheme based on watermark and cryptology should be promising 同時指出,將數字水印和現代密碼學有機地結合起來,以之為基礎構造水印方案,將是多媒體認證技術的發(fā)展的一個很有前景的方向。